github.com/muhammadn/cortex@v1.9.1-0.20220510110439-46bb7000d03d/pkg/util/push/push.go (about)

     1  package push
     2  
     3  import (
     4  	"context"
     5  	"net/http"
     6  
     7  	"github.com/go-kit/log/level"
     8  	"github.com/weaveworks/common/httpgrpc"
     9  	"github.com/weaveworks/common/middleware"
    10  
    11  	"github.com/cortexproject/cortex/pkg/cortexpb"
    12  	"github.com/cortexproject/cortex/pkg/util"
    13  	"github.com/cortexproject/cortex/pkg/util/log"
    14  )
    15  
    16  // Func defines the type of the push. It is similar to http.HandlerFunc.
    17  type Func func(context.Context, *cortexpb.WriteRequest) (*cortexpb.WriteResponse, error)
    18  
    19  // Handler is a http.Handler which accepts WriteRequests.
    20  func Handler(maxRecvMsgSize int, sourceIPs *middleware.SourceIPExtractor, push Func) http.Handler {
    21  	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
    22  		ctx := r.Context()
    23  		logger := log.WithContext(ctx, log.Logger)
    24  		if sourceIPs != nil {
    25  			source := sourceIPs.Get(r)
    26  			if source != "" {
    27  				ctx = util.AddSourceIPsToOutgoingContext(ctx, source)
    28  				logger = log.WithSourceIPs(source, logger)
    29  			}
    30  		}
    31  		var req cortexpb.PreallocWriteRequest
    32  		err := util.ParseProtoReader(ctx, r.Body, int(r.ContentLength), maxRecvMsgSize, &req, util.RawSnappy)
    33  		if err != nil {
    34  			level.Error(logger).Log("err", err.Error())
    35  			http.Error(w, err.Error(), http.StatusBadRequest)
    36  			return
    37  		}
    38  
    39  		req.SkipLabelNameValidation = false
    40  		if req.Source == 0 {
    41  			req.Source = cortexpb.API
    42  		}
    43  
    44  		if _, err := push(ctx, &req.WriteRequest); err != nil {
    45  			resp, ok := httpgrpc.HTTPResponseFromError(err)
    46  			if !ok {
    47  				http.Error(w, err.Error(), http.StatusInternalServerError)
    48  				return
    49  			}
    50  			if resp.GetCode() != 202 {
    51  				level.Error(logger).Log("msg", "push error", "err", err)
    52  			}
    53  			http.Error(w, string(resp.Body), int(resp.Code))
    54  		}
    55  	})
    56  }